/*
 * GPUImage-x
 *
 * Copyright (C) 2017 Yijin Wang, Yiqian Wang
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#ifndef BilateralFilter_hpp
#define BilateralFilter_hpp

#include "../macros.h"
#include "FilterGroup.hpp"

NS_GI_BEGIN


class BilateralMonoFilter : public Filter {
public:
    enum Type {HORIZONTAL, VERTICAL};
    
    static BilateralMonoFilter* create(Type type = HORIZONTAL);
    bool init();
    
    virtual bool proceed(bool bUpdateTargets = true) override;
    
    void setTexelSpacingMultiplier(float multiplier);
    void setDistanceNormalizationFactor(float value);
protected:
    BilateralMonoFilter(Type type);
    Type _type;
    float _texelSpacingMultiplier;
    float _distanceNormalizationFactor;
};

class BilateralFilter : public FilterGroup {
public:
    virtual ~BilateralFilter();
    
    static BilateralFilter* create();
    bool init();
    
    void setTexelSpacingMultiplier(float multiplier);
    void setDistanceNormalizationFactor(float value);
    
protected:
    BilateralFilter();
    
private:
    //friend BilateralMonoFilter;
    BilateralMonoFilter* _hBlurFilter;
    BilateralMonoFilter* _vBlurFilter;
};


NS_GI_END

#endif /* BilateralFilter_hpp */
